<html>
   <head>
      <title>修改成绩</title>
   </head>
   <body>
      <form action="/action/grade/edit/{{stu_sn}}/{{cou_sn}}" method="post">
        成绩：<input type="text" name="grade" value="{{grade}}">
        <input type="submit" value="修改">
      </form>
     <hr>
     <a href="/" > 回到成绩列表 </a>
   </body>
 </html>
